Ventilator for metallic walls



pi. 2a, 1924. Lwsz E. R. ARMSTRONG VENTILATOR FOR METALLIC WALLS Filed May 22, 1922.

i ox

Patented Sept.` 23, 1924.

EDWARD a. aRMsTaoNe, or contarnos, onze, Assrenoa To F. o; sononninenia, or

ooLUMBUs, orrio.

` i VENTILA'ron non Application med May 22,

To @ZZ whom z'tmay. concern: j

Be it known that I, rEDWARD It. ARM- sTRoNG, a citizen of the United States, residing in Columbus, in the county of Franklin, State of Ohio, have `invented certain new and. useful. Improvements, in Ventilators for Metallic Valls, offwhich thev following is a' specification. j i j 'Ihisinvention relates to improvements in an improved ventilator structure for sheet metal, walls, of the type found particularly in the constructionV ofcorn cribs, grain bins andfthe like,

An object of the invention rests in the provision of a ventilator structure of this character which will possess marked mechanical strength, and possessing an inherent ability to withstand severe pressures and strains and maintain its normal operative condition, at the same time to' provide for all necessary ventilation for the passage of air through the wall and exclude rain, moisture or other liquids.

With this and other objects in view the invention consists in the novel features of construction, the combination of elements and arrangement of parts, hereinafter fully described and pointed out in the appended claims.

In the accompanying drawing-z Figure 1 is a side elevation of a corn crib and disclosing the walls thereof provided with the ventilator structure comprising the present invention.

Figure 2 is an enlarged side elevation of the ventilator structure.

Figure 3 is a vertical section taken on the line 3-3 of Figure 2.

Figure 4 is a transverse section on the line 4*@ of Figure 2.

Referring more particularly to the details of the invention, the numeral l designates a corn crib or other suitable structure formed to include sheet metal side walls, which latter may be designated by the reference numeral 2. In carrying out the present invention the walls`2 are provided with ventilat-ing openings 3, disposed in staggered relationship and arranged in rows at closely spaced intervals. To provide for the inclusion of the openings 3 so that air may circulate through the corn crib or grain bin, and at the same time to exclude moisture and provide a structure possessing a very considerable degree of strength, each of the openings portion of METALLIC UIALLS.

1922. Serial No. 562,823.

y 3 is formed by the inclusion of what may be termed a `ventilator structure 4l. rIhis.structure consists in this instance of a lip 5 of a substantially circular form, which is pressed outwardly of the wall 2 during the process of formation and can be readily accomplished in the manufacture of `the wall. so that the lip will be of substantiallyconvex concavo form. In this lip I preferably form aplurality of slits 6, and between these slits the lip is forced inwardly to provide a depresse-d portion 7, the major which lying in the sameplane as the body of the wall 2. The upper end of the portion 7 is joined as at 8 to the upper part of the lip 5, and it will be noted that the said portion 7 is in the transverse section slightly dished to provide al moisture course 9. By depressing the portion 7 it will be observed that the edges 8 thereof will be offset inwardly as compared with the corresponding edges 9 of the lip 5, and between these edges 8 and 9 the air passages 3 are formed through which air may circulate to ventilate the interior of the struct-ure defined by the walls 2. It will be noted that the lip is joined to the wall 2 along substantially circular lines over an extended distance, and it is by virtue of this fact that the rigidity of the lip and its resistance to bending pressures is effected.

By the construction described it will be observed that water traveling downwardly along the exterior surface of the wall 2, upon striking or engaging the lip 5 will be deiected to the greater part away from the openings 3, as the natural tendency of the water is to flow in the course offering the least resistance to its passage. Such water that may flow over the upper part of the lip will be directed into the course 9 formed in the depressed port-ion 7 and thence led away from the lip without being forced through the openings 3. Again attention is directed to the fact that the ventilator structure does not project into the bin or corn crib l, but that the major part thereof is disposed to project exteriorly of saidbin or crib. This leaves the inner surface of the wall 2 perfectly smooth and free from obstructing proj ections,`enabling the weight of the contents of the bin or crib to rest directly upon the floor and not to be supported to any undue extent by the wall 2 itself. The present invention is particularly an improve lip and said portiona plurality of air pas-y ment over past structures utilizing oiset tongues, 1n that the present structure provides for protection against the exclusion l.of moisture and to an even more important extent-provides a strong construction whlch will withstand successfully strains, pressures sages, the saidl depressed central portion being disposed in the 'manner to lie in the sameplane as said wall.

y 2.- Inaventilator structure for sheet metal walls, an outwardly projecting circular lip 'integrally formed with a sheet metal wall,

the center of said lip being depressed so as to lie in substantially the same plane as said wall, thereby producing a pair of air passageways between the depressed central portion and the outwardly Aprojecting raised portions of said lip.

3. In a sheet metal wall, a ventilator structure therein comprising outwardly projecting substantially semi-circular eonveXed lips, and a depressed central portion integrally formed with and lying between said lips to produce a plurality of air passageways. Y c

4. Inv a sheet metal wall, a ventilator structure therein comprisingan outwardly extending integral lip structure Jformed to i include a pair of wings, and a depressed central portion lying between said wings and disposed in the same plane as said wall,

the upperpart of said centralportion being joined` to said lip. Y c. t i n i vIn `testimony whereof I, have signed my name to this specification'.A

EDWARD R.,ARMSTRONG. 

